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351 Coil wiring

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Old Aug 12, 2009 | 01:59 PM
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66_in_ky
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351 Coil wiring

I usually hang out in the 61-66 and FE forums. I'm preparing to install a rebuilt 428 in my 66 F250. I don't have a tach installed on the truck. I do have an old Sears handheld dwell / tach that I've never used. I want to test it on another V8 and my friend has a 1990 F250 with an 351.

My understanding is that the the red clip on the tach is supposed to go on the negative side of the coil and the black clip is supposed to go to ground (negative post on the battery).

I read another post on this forum concerning a similar question on a 5.0L
https://www.ford-trucks.com/forums/3...onnection.html

The original poster there said "The stamped marks ( + /- ) were located at the bottom inside the female connector and the negative wire on mine was yellow with a dark green stripe."

Will the negative wire be the same on a 351?

Thank you
 
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Old Aug 12, 2009 | 02:15 PM
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I don't know if it will be the same color , but the neg side of the coil is the dist side so you can follow the wire ... Lew
 
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Old Aug 12, 2009 | 09:49 PM
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Lew - Thank you for the guidance. We will check it out tomorrow.
 
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